Image for a portion of a display screen



The FIGURE is a front view of an image for a portion of a display screen showing our new design.

The broken line showing within the shaded regions and of the portion of the display screen are for illustrative purposes only and forms no part of the claimed design. The broken line features within the unclaimed portion of the display screen are unclaimed subject matter. 

The ornamental design for an image for a portion of a display screen, as shown and described. 